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Naseri T, Beiki V, Mousavi SM, Farnaud S. A comprehensive review of bioleaching optimization by statistical approaches: recycling mechanisms, factors affecting, challenges, and sustainability. RSC Adv 2023; 13:23570-23589. [PMID: 37555097 PMCID: PMC10404936 DOI: 10.1039/d3ra03498d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 07/27/2023] [Indexed: 08/10/2023] Open
Abstract
A serious environmental problem is associated with the accumulation of solid waste on the Earth. Researchers are encouraged to find an efficient and sustainable method to recover highly profitable heavy metals and precious and base metals. Bioleaching is a green method of recovering valuable metals from solid waste. Optimizing the variables and conditions of the bioleaching process is crucial to achieving maximum metal recovery most cost-effectively. The conventional optimization method (one factor at a time) is well-studied. However, it has some drawbacks, such as the necessity of more experiments, the need to spend more time, and the inability to illuminate the synergistic effect of the variables. Optimization studies are increasingly utilizing response surface methodology (RSM) because it provides details about the interaction effects of variables with fewer experiments. This review discusses the application of RSM for bioleaching experiments from other solid wastes. It discusses the Central Composite and Box-Behnken designs as the most commonly used designs for optimizing bioleaching methods. The most influential factors for increasing the heavy metal recovery rate in applying RSM using the bioleaching process are recognized, and some suggestions are made for future research.
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Affiliation(s)
- Tannaz Naseri
- Biotechnology Group, Chemical Engineering Department, Tarbiat Modares University Tehran Iran +98-21-82884931 +98-21-82884917
| | - Vahid Beiki
- Biotechnology Group, Chemical Engineering Department, Tarbiat Modares University Tehran Iran +98-21-82884931 +98-21-82884917
| | - Seyyed Mohammad Mousavi
- Biotechnology Group, Chemical Engineering Department, Tarbiat Modares University Tehran Iran +98-21-82884931 +98-21-82884917
- Modares Environmental Research Institute, Tarbiat Modares University Tehran Iran
| | - Sebastien Farnaud
- CSELS, Faculty of Health & Life Sciences, Coventry University Coventry UK
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Yao J, Tan SY, Metcalfe PI, Fennell PS, Kelsall GH, Hallett JP. Demetallization of Sewage Sludge Using Low-Cost Ionic Liquids. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:5291-5300. [PMID: 33725441 PMCID: PMC8154363 DOI: 10.1021/acs.est.0c03724] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 03/05/2021] [Accepted: 03/08/2021] [Indexed: 06/12/2023]
Abstract
Sludge produced from wastewater treatment has little to no value and is typically treated through volume reduction techniques, such as dewatering, thickening, or digestion. However, these methods inherently increase heavy metal concentrations, which makes the sludge unsuitable for land spreading and difficult to dispose of, owing to strict legal requirements/regulations concerning these metals. We addressed this problem, for the first time, by using recyclable low-cost protic ionic liquids to complex these toxic metals through a chemical fractionation process. Sewage sludge samples collected from wastewater plants in the UK were heated with methylimidazolium chloride ([Hmim]Cl, triethylammonium hydrogen sulfate ([TEA][HSO4]) and dimethylbutylammonium hydrogen sulfate ([DMBA][HSO4]) under various operating temperatures, times and solids loadings to separate the sludge from its metal contaminants. Analysis of the residual solid product and metal-rich ionic liquid liquor using inductively coupled plasma-emission spectrometry showed that [Hmim]Cl extracted >90% of CdII, NiII, ZnII, and PbII without altering the phosphorus content, while other toxic metals such as CrIII, CrVI and AsIII were more readily removed (>80%) with [TEA][HSO4]. We test the recyclability of [Hmim]Cl, showing insignificant efficiency losses over 6 cycles and discuss the possibilities of using electrochemical deposition to prevent the buildup of metal in the IL. This approach opens up new avenues for sewage sludge valorization, including potential applications in emulsion fuels or fertilizer development, accessed by techno-economic analysis.
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Affiliation(s)
- Joseph
G. Yao
- Department
of Chemical Engineering, Imperial College
London, South Kensington, Exhibition Road, London SW7 2AZ, United Kingdom
| | - Sze-yin Tan
- Department
of Chemical Engineering, Imperial College
London, South Kensington, Exhibition Road, London SW7 2AZ, United Kingdom
| | - Philip I. Metcalfe
- Efficiency
Technologies, Bluecube House, Milton Keynes, Buckinghamshire MK12 5TS, United Kingdom
| | - Paul S. Fennell
- Department
of Chemical Engineering, Imperial College
London, South Kensington, Exhibition Road, London SW7 2AZ, United Kingdom
| | - Geoffrey H. Kelsall
- Department
of Chemical Engineering, Imperial College
London, South Kensington, Exhibition Road, London SW7 2AZ, United Kingdom
| | - Jason P. Hallett
- Department
of Chemical Engineering, Imperial College
London, South Kensington, Exhibition Road, London SW7 2AZ, United Kingdom
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Brisolara KF, Bourgeois J. Biosolids and sludge management. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2019; 91:1168-1176. [PMID: 31433899 DOI: 10.1002/wer.1212] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 07/08/2019] [Accepted: 08/16/2019] [Indexed: 06/10/2023]
Abstract
The advancements in the field of sludge and biosolids have been made over the past year. This review outlines the major contributions of researchers that have been published in peer-reviewed journals and conference proceedings throughout 2018. The review is organized in sections including regulatory developments and market analysis; analysis and quantification of characteristics including microconstituents and metals; treatment advances for the conversion of sludge to biosolids including pretreatment and sludge minimization, conditioning and dewatering, digestion, composting, and innovative technologies; product development and reuse including adsorbents and thermal products, agricultural and other uses, and innovative uses; odor and air emissions; and energy factors. PRACTITIONER POINTS: Summary of advances in the field of residuals and biosolids research in 2018. This review outlines the major contributions of researchers that have been published in peer-reviewed journals and conference proceedings. Topics covered range from regulation to innovation.
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Affiliation(s)
| | - John Bourgeois
- Louisiana State University Health Sciences Center, New Orleans, Louisiana
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Zhou W, Zhang L, Peng J, Ge Y, Tian Z, Sun J, Cheng H, Zhou H. Cleaner utilization of electroplating sludge by bioleaching with a moderately thermophilic consortium: A pilot study. CHEMOSPHERE 2019; 232:345-355. [PMID: 31158629 DOI: 10.1016/j.chemosphere.2019.05.185] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 05/03/2019] [Accepted: 05/22/2019] [Indexed: 06/09/2023]
Abstract
The semi-pilot scale bioleaching of electroplating sludge by the moderately thermophilic acidophilic consortium was carried out for the first time. During the microbial cultivation, Leptospirillum ferriphilum CS13, Acidithiobacillus caldus S2, and Sulfobacillus acidophilus CS5 could grow rapidly in a 300 L aeration packed reactor, in which the total suspended cell concentration could fluctuate around 3 × 108 cells/mL and the community structure remained relatively stable. During the bioleaching process, the microbial stock solution could effectively leach heavy metals from electroplating sludge in a stirred reactor within a few hours. Meanwhile, the effects of pH, temperature, the quantity of active culture, and liquid-solid ratio on the bioleaching behavior were also investigated. The optimal conditions for electroplating sludge bioleaching were pH 1.5, temperature 45 °C, bacterial liquid ratio 40%, liquid-solid ratio 4:1 L kg-1, and leaching time 5 h. The total removal rate of various heavy metals in electroplating sludge was over 99%. The bioleaching residue was successfully passed the TCLP test, and the total contents of heavy metals in the residue were also well below the regulatory criteria. In addition, the XRD analysis of the bioleaching residue was also confirmed that the moderately thermophilic consortium bioleaching provided a cleaner process than chemical leaching on the removal of the residual fraction metals, which was feasible and attractive for industrial treatment of electroplating sludge.
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Affiliation(s)
- Wenbo Zhou
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China; Key Laboratory of Biohydrometallurgy of Ministry of Education, Central South University, Changsha, 410083, China
| | - Lijuan Zhang
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China; Key Laboratory of Biohydrometallurgy of Ministry of Education, Central South University, Changsha, 410083, China
| | - Jing Peng
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China; Key Laboratory of Biohydrometallurgy of Ministry of Education, Central South University, Changsha, 410083, China
| | - Yang Ge
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China; Key Laboratory of Biohydrometallurgy of Ministry of Education, Central South University, Changsha, 410083, China
| | - Zhuang Tian
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China; Key Laboratory of Biohydrometallurgy of Ministry of Education, Central South University, Changsha, 410083, China
| | - Jianxing Sun
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China; Key Laboratory of Biohydrometallurgy of Ministry of Education, Central South University, Changsha, 410083, China
| | - Haina Cheng
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China; Key Laboratory of Biohydrometallurgy of Ministry of Education, Central South University, Changsha, 410083, China.
| | - Hongbo Zhou
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China; Key Laboratory of Biohydrometallurgy of Ministry of Education, Central South University, Changsha, 410083, China.
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